Roller side bearing.



A. STUOKI.

ROLLER SIDE BEARING. APPLICATION FILED APR. 10, 1911.

1,033,210. Patented July 23,1912.

WITNESSES- *can readily be acenter. Rolling on the ARNOLD srucx1,. orPITTSLBUItGH, PENNSYLVANIA.

ROLLER- SIDE BEARING.

To all whom a may 00mm:

Be it knownthat I, ARNOLD STUOKI, a

resident of Pittsburgh," in the county of.

Allegheny and State of Pennsylvania", have invented a nw and usefulImprovement in Roller Side Bearings, of which thefollowing is aspecification.

This invention relates to side bearings for railway cars.

The object is to provide a bearing which is eflicient and largelyfrictionless and which performs all of the other necessary functions ofside bearings, which is very simple and therefore inexpensive both as tofirst cost and subsequent repair, which is lasting in service, and whichpreferably travels radially and returns in a radial path to centralposition whenever the body bolster is raised.

The invention comprises a side bearing constructed and arranged ashereafter described and claimed. I

In the accompanying drawing Figure l is a plan view of the bearing; Fig.2 is in part a side view and in part a vertical section thereof; Fig. 3is an end view thereof partly in section; and Fig. 4 is in part a sideview and in part a'vert'cal section showing a modification. I

In the drawings the side bearing is shown adapted for a tapering truckbolster, but it adapted to a straight truck bolster and to receiveeither a straight or tapering body bolster.

- The side bearing comprises a suitable frame or housing 1, having itslower face inclined to correspond tothe taper of the bolster, which isindicated at 2. The housing is provided with an inwardly projectingflange 3 and a pair of laterally projecting fianges.4, provided withholes for receiving bolts 5' or rivets for connecting the bearing to thebolster. Thebottom of the housing forms a bearing surface 6, the outerand inner edges of which are struck from the center plate or king pin asbearing surface 6 is a conical roller-"7 which is tapered to form afrustum of a cone whose apex is in the center of the center plate orking pin; The

' Specification of vLetters Patent. Application filed April 10, 1911.

shaped on an arc.

Patented July 23, 1912 Serial No. 620,006.REISSUED bearing surface 6 androller 7 are preferably smooth and plain to reduce friction and wear.The bearing surface is of considerable Width and the roller ofconsiderable length, in order to aflord suflicient resistance againstthe pounding action of the body bolster, which is considerable, sinceside bearings of this class frequently have a material amount ofclearance. The roller is of very large diameter for such bearings so asto afford more than mere lines of contact and also to increase thebearing surface and reduce the rolling friction to a minimum. Theconical shape of the roller particularly adapts it to travel arc shapedbearing surface, thereby avoiding all necessity of sliding, which wouldnot only cause much friction but also flatten the roller. The h suitablebarriers, of skeleton or open construction, to confine the roller andprevent it'from jumping out of the housing under normal operatingconditions. As shown, the housing has the upousing is provided withwardly projecting inside web or wall 8 and 75 outside web or wall 9 andend closing walls or webs 10. The inside and outside webs or walls areprovided with openings 11 extending down to the bearing surface 6 andthe end walls or webs are also provided with 30 extending down to theopenings 12 also bearing surface 6, so that a pocket is avoided and anydirt which gets into the bearing will immediately pass out through oneof these openings. shaped as to form stops for the roller, preferablyhaving their upper portions substantially vertical and curved as shownat 13 to the contour of the roller to provide a broad contacting stopfor the roller. The side and 90 end walls or Webs extend upwardlymaterially above the center'of the roller, thereby forming 'a deep cagefrom which the roller cannot escape in all normal conditions of 'use,and 11 and 12 to be made very large to insure the escape of dirt. Thisconstruction forms practically a skeleton cage with the side and endbarriers to restrain the roller supported fromthebase or bottom by-sixposts or 100 without friction on the webs or walls, preferably The endwalls or webs are so also enabling the openings bod r thereb avoidinfriction.

. proper position,

ing toward the king pin or center plate.

which secure the roller in said housing the space columns. The insideand outside webs or walls 8 and 9 preferably flare outwardly or awayfrom each other toward their upper edges, as, shown in Fig. 3. Theroller fits betweenthese webs or walls quite closely, but on account ofthe flaring condition of the latter the ends of the roller cancontact'therewith only at the bottom, that is, near the bearing surface6, which obviously is the point of rotation of a rolling Preferably theinner or smaller end of the roller is plain, as shown, and its outer endis somewhat convex. Hence, since the roller fits between the side wallsor webs rather closely, should any external cause tend to give theroller an askew position, its fiat innor end will hug the convex surfaceof the inner wall or web 8, while its convex outer end will hug theconcavesurface of the outer wall or web 9, so that no binding can occurand the roller has a tendency to resume its that is, with its axispoint- The bearing surface 6 curves or is inclined upwardly slightlyfrom its center-toward its ends, so that when the bolsters separatesufiiciently to release the roller it rolls back to central position.This bearing surface may, if desired, be formed by a hardened steelplate inserted in the cast metal of the housing, as shown at 6, Fig. 4.This plate is shown secured to the housing by the bolts 5 housing to thebolster.

The bearing desc 'bed is of very simple construction, avoids all pocketsin which dirt can accumulate, is inexpensive both as to first cost andsubsequent repair and is very lasting on account of the large andsubstantial character of its parts. It consists of only two parts, bothof which are substantial. .The roller is of sufficient size topractically overcome all friction in rolling,

while the shape'of the ends and of the inside and outside webs orskeleton walls of the housing prevent friction at the ends of theroller. The large size of the roller both as to diameter and length,makes the device nearly frictionless, as well as very lasting. Theroller is perfectly free to travel in the housings under, all changes ofangular relation between the bolsters and will roll back to centralposition whenever the bolsters separate.

What I claim is:

1. A side bearing 'for railway cars comprising a housing adapted to besecured to the lower bolster and having its bottom forming a bearingsurface and provided with side and end walls or barriers, and a free toroll on said bearing surface, said side and end walls or barriers beingconnected to the bottom by 'side and prevent the escape roaaaro posts orcolumns to provide on all sides large openings at the level of thebearing surface, said wallsor barriers extending upwardly beyond thecenter of the roller, and the upper portions of the end walls beingsubstantially vertical to prevent the escape of the roller.

2. A side bearing for railway cornprising a housing adapted to besecured to the lower bolster and having its bottom forming a bearingsurface inclining upwardly from its center toward its n provided withside and end walls or can riers, and a roller in said housing free toroll on said bearing surface, said side and end walls or barriers beingconnected to the bottom by posts or columns to provide on all sideslarge openings at the level of the hearing surface, said walls orbarriers extending upwardly beyond and the upper portions of the endwalls being substantially vertical to prevent the escape of the roller.

' 3. A side bearing for railway car's comprising a housing adapted to besecured to the lower bolster and having its bottom forming a bearingsurface and provided with end walls or barriers, said side walls orbarriers being are shaped, and a conical roller in said housing free toroll on said bearing surface, said side and end'walls or barriers beingconnected to the bottom by posts or columns to provide on all sideslarge openings at the level of the bearing surface, said walls orbarriers extending upwardly beyond the center of the roller and theupper portions of the end walls being substantially vertical to preventthe escape of the roller.

4:. A side hearing for railway cars comprising a housing adapted to besecured to the lower bolster and having its bottom forming a bearingsurface I'inclining upwardly from its center toward its ends andprovided with side and end walls or barriers, said side walls orbarriers being are shaped, and a conical roller in said housing free toroll on said bearing surface, said side and end walls or barriers beingcon nected to the bottom by posts or columns to provide on all sideslarge openings at the level of the bearing surface, said walls orbarriers extending upwardly beyond the center of the roller and theupper portions of the end walls being substantially vertical to of theroller.

5. 'A side bearing for railway cars comprising a housing adapted to besecured to the lower bolster and having its bottom forming a bearingsurface and provided with side and end walls or barriers, and a rollerin said housing free to roll on said bearing surface, said side and endwalls or barriers the center of the roller .be' cennected to thebottomby' or riereflmng' ap'mrt u wardly sojthat the coll ifms andprovided, on all-s1 as with roller ends contact att e bettom only; 10

large openings at the level of the bearing In testimony whereoflI havehereuntoset surface, said walls or barriers extending lipmy hand. v

5 wardly beyond the center of the roller, and V {ARNOLD STITCH.-theupper portions the end walls sub- Witnesses stantmlly vertical toprevent the escape of F. W. W the roller, the side retaining walls orbar- MARY E. Cmoom

